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- Title
High acquisition and environmental contamination rates of CC17 ampicillin-resistant Enterococcus faecium in a Dutch hospital.
- Authors
Marieke J. A. de Regt; Lotte E. van der Wagen; Janetta Top; Hetty E. M. Blok; Titia E. M. Hopmans; Adriaan W. Dekker; Ronald J. Hené; Peter D. Siersema; Rob J. L. Willems; Marc J.M. Bonten
- Abstract
: Background Enterococcus faecium has rapidly emerged as a nosocomial pathogen worldwide, and the majority of these isolates belong to clonal complex-17 (CC17). In Europe, CC17 isolates are usually ampicillin-resistant, but most are still vancomycin-sensitive. We aimed to study ampicillin-resistant E. faecium (ARE) epidemiology in our hospital. : Methods In a 3 month study, 210 of 358 admissions (59%) to haematology and gastroenterology/nephrology were screened for rectal ARE colonization on admission (<48 h) and 148 of 210 (70%) also at discharge (<72 h). In a second (3 month) study, environmental swabs from eight predetermined sites were obtained from ARE-colonized haematology patients once weekly. All ARE isolates were genotyped by multiple-locus variable-number tandem repeat analysis (MLVA). : Results ARE admission prevalence was 10% and 16% and acquisition rates were 39% and 15% in haematology and gastroenterology/nephrology, respectively. Carriage on admission was associated with previous admission <1 year (OR 5.0, 95% CI 1.8–14.0) and acquisition with β-lactam (OR 2.7, 95% CI 1.1–6.7) and quinolone use (OR 3.1, 95% CI 1.1–8.2). Five of the 57 (9%) colonized patients developed invasive ARE infections. Genotyping revealed 12 genotypes (all CC17) with two MLVA types responsible for 94% of acquisitions. In 18 of the 19 colonized patients, the environment was contaminated with ARE. Sites most often contaminated were the toilet seat (43%), over-bed table (34%) and television remote control (28%). : Conclusions CC17 ARE epidemiology is characterized by high admission (10% to 16%), acquisition (15% to 39%) and environmental contamination (22%) rates, resulting from cross-transmission, readmission and antibiotic pressure. A multifaceted infection control approach will be needed to curtail further spread.
- Subjects
DRUG resistance in microorganisms; ENTEROCOCCUS faecalis; BETA lactam antibiotics; NOSOCOMIAL infections; EPIDEMIOLOGY; HOSPITAL admission &; discharge; HEMATOLOGY; GASTROENTEROLOGY; NEPHROLOGY; PATHOGENIC microorganisms; AIR pollution
- Publication
Journal of Antimicrobial Chemotherapy (JAC), 2008, Vol 62, Issue 6, p1401
- ISSN
0305-7453
- Publication type
Article